The actions colors defined here:

Are also defined here: https://github.com/swagger-api/swagger-ui/blob/master/src/style/_colors.scss

And without the !default key.

It make colors overriding impossible with main.scss integration. The only workaround is to import files one by one without the _colors.scss one.